古代和近代东西方的文明交往推动了人类社会的发展进程。请回答：

D.

    There is a little girl. Her name is May. She is eight years old. May always asks her mother, "Why is my name May?" Her mother says, "Because your birthday is in May." The little girl is very happy and she likes her name. She thinks her name is very interesting. Every year, on May's birthday, all her friends come to her house and say happy birthday to her. They watch TV, play games and eat the birthday cake together. And she can get a lot of presents(礼物).

    May has a little brother. He is five years younger than his sister. She likes him very much. He was born(出生) in April. Can you guess his name? Haha, his name is April. Oh, April will have a sister next month, the second month of a year. Can you guess what her name is?

第三届世界互联网大会，是由中国倡导并举办的互联网盛会，于2016年11月16日至18日在                举办。大会的主题是“创新驱动造福人类──携手共建网络空间命运共同体”。（   ）

如图所示的实线为汽缸内一定质量的理想气体由状态1到状态2的变化曲线，不考虑气体的分子势能则整个过程中汽缸内气体的内能（   ）